I have bought both the 500ml cup and the bottles, one of 600ml and the other of 1 liter. I recommend it a thousand times as I have changed dozens of thermal cups and bottles from various companies, and this one is truly VFM along with the Klean Kanteen, which are more expensive but equally high quality. With my eyes closed. I have been using it for years for the gym and work, primarily for cold drinks at 50 degrees due to working outdoors, and it keeps ice cubes intact after hours in the sun, incredibly really, and the Klean Kanteen is also very excellent but a bit pricey

What I would like is for it to close when you haven't put the straw in, in some way without leaks. Otherwise, it's fine

I have other products from this specific company, they are excellent in temperature preservation, both in terms of quality and durability. This particular one is not designed to be turned upside down, the lid fits perfectly but it has a hole